Question #6426339Single Choice
Physics
Question
A 10 kg sled is pulled by a force of 40N at an angle of 37° to the horizontal on a rough surface with a coefficient of kinetic friction of 0.2. The sled moves 8 m. Calculate the work done by the frictional force. (Take g=10 m/s2, sin37° = 0.6, cos37° = 0.8)
Options
A
-64 J
B
-108.8 J
C
-121.6 J
D
-320 J
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